32 Best Sights in Washington, D.C., USA

During azalea season (mid-April through May), this 451-acre oasis operated by the U.S. Department of Agriculture is a blaze of color. In early summer, clematis, peonies, rhododendrons, and roses bloom. At any time of year, the 22 original Corinthian columns from the U.S. Capitol, re-erected here in 1990, are striking. All 50 states are represented by a state tree in the Grove of State Trees. Since 2014, a pair of American bald eagles have made a home near the azaleas, and the nest can be seen via an unobstructed viewing scope. The arboretum has guided hikes throughout the year, including a Forest Bathing Walk, and dogs are allowed on the grounds as long as they're on a leash at all times. Check the website for schedules and to register. Don't miss the Bonsai and Penjing Museum.

The top of the Washington Monument is perhaps the best, most breathtaking place to see the city and get a good idea of its layout.

The 555-foot, 5⅛-inch monument, which punctuates the capital like a huge exclamation point, was part of Pierre L'Enfant's plan for Washington, but his intended location proved to be so marshy that the structure was moved 100 yards southeast. Construction began in 1848 and continued until 1884. Upon completion, the monument was the world's tallest structure and weighed more than 81,000 tons. Six years into construction, members of the anti-Catholic Know-Nothing Party stole and smashed a block of marble donated by Pope Pius IX. This action, combined with funding shortages and the onset of the Civil War, brought construction to a halt. After the war, building finally resumed, and though the new marble came from the same Maryland quarry as the old, it was taken from a different stratum with a slightly different shade. Inserted into the walls of the monument are 193 memorial stones from around the world. The monument reopened in spring 2019 after an elevator modernization project. Up to six tickets can be requested for just $1 per person at  recreation.gov.